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esp-9

  1. davstev

    Electrostatic Phones: membrane issues?

    Hi Folks, Not too long ago, I bought a near-mint, still boxed pair of early 70s, Koss ESP-9 electrostatic headphones. Obviously old, but in good cosmetic shape & seems barely used. After several weeks I found the time to hook them up. I wired the E-9 energizer to the back of my Kenwood 700M...
    • davstev
    • Thread
    • electrostatic headphones esp-9 headphones koss
    • Replies: 10
    • Forum: Headphones
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